126431736 has 64 divisors (see below), whose sum is σ = 331603200. Its totient is φ = 40094208.

The previous prime is 126431689. The next prime is 126431743. The reversal of 126431736 is 637134621.

It is a junction number, because it is equal to n+sod(n) for n = 126431697 and 126431706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124800 + ... + 125808.

It is an arithmetic number, because the mean of its divisors is an integer number (5181300).

Almost surely, 2^126431736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126431736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165801600).

126431736 is an abundant number, since it is smaller than the sum of its proper divisors (205171464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126431736 is a wasteful number, since it uses less digits than its factorization.

126431736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268 (or 1264 counting only the distinct ones).

The product of its digits is 18144, while the sum is 33.

The square root of 126431736 is about 11244.1867647243. The cubic root of 126431736 is about 501.9017389409.

The spelling of 126431736 in words is "one hundred twenty-six million, four hundred thirty-one thousand, seven hundred thirty-six".